While playing Roblox, I noticed that my mouse stops registering the left button whenever I'm holding the right button, so I can't aim and fire at the same time. The same thing happens in Chrome, and the problem occurs with both my old mouse and a brand-new replacement. I'm connecting my mouse and keyboard to an iPad through a PTron Mport 360 USB-C adapter with three USB-A ports and one USB-C port. What could be causing this, and is there a way to fix it?
1 Answer
Since the problem happens with two different mice and outside the game as well, the mouse hardware probably isn’t the issue. The USB-C hub or adapter may not be passing simultaneous button inputs correctly. If possible, connect the mouse directly to the computer or iPad, or try a different adapter or hub, and see whether both buttons work together.

I would have tested a direct connection, but my laptop is currently broken, so I’m using the mouse and keyboard with my iPad.